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3 years ago

What is the solution to: 2x + 14= 34? Pls do your best no wrong answers

Mathematics

2 answers:

Lelu [443]3 years ago

8 0

Answer: x=10

Step-by-step explanation:

sweet-ann [11.9K]3 years ago

7 0

Answer:

x=10

Step-by-step explanation:

2x + 14 = 34

Subtract 14 from both sides of the equation. (14 - 14) (34 -14)

Next, Simplify.

2x=20

Divide both sides of 2x=20 by the same term, which is 2.

Then after all of that you come to the conclusion of x=10

Hopefully this helps! If this wasn't the answer you were looking for please don't hesitate to private message me or comment here. Have a nice day/night! :)

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2 years ago

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3 years ago

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3 years ago

Based on information from Consumer Reports, a random sample of 35 thirty-gram cookies had a sample mean of 146 calories. The sta

Nonamiya [84]

Using the z-distribution, it is found that the 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).

We are given the standard deviation for the population, which is why the z-distribution is used to solve this question.

The information given is:

Sample mean of $\overline{x} = 146$ .

Population standard deviation of $\sigma = 12$ .

Sample size of $n = 65$ .

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The critical value, using a z-distribution calculator, for a 95% confidence interval is z = 1.645, hence:

$\overline{x} - z\frac{\sigma}{\sqrt{n}} = 146 - 1.645\frac{12}{\sqrt{35}} = 143$

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A similar problem is given at brainly.com/question/16807970

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2 years ago